| var isArguments = require('./isArguments'), |
| isArray = require('./isArray'), |
| isArrayLike = require('../internal/isArrayLike'), |
| isFunction = require('./isFunction'), |
| isObjectLike = require('../internal/isObjectLike'), |
| isString = require('./isString'), |
| keys = require('../object/keys'); |
| |
| /** |
| * Checks if `value` is empty. A value is considered empty unless it's an |
| * `arguments` object, array, string, or jQuery-like collection with a length |
| * greater than `0` or an object with own enumerable properties. |
| * |
| * @static |
| * @memberOf _ |
| * @category Lang |
| * @param {Array|Object|string} value The value to inspect. |
| * @returns {boolean} Returns `true` if `value` is empty, else `false`. |
| * @example |
| * |
| * _.isEmpty(null); |
| * // => true |
| * |
| * _.isEmpty(true); |
| * // => true |
| * |
| * _.isEmpty(1); |
| * // => true |
| * |
| * _.isEmpty([1, 2, 3]); |
| * // => false |
| * |
| * _.isEmpty({ 'a': 1 }); |
| * // => false |
| */ |
| function isEmpty(value) { |
| if (value == null) { |
| return true; |
| } |
| if (isArrayLike(value) && (isArray(value) || isString(value) || isArguments(value) || |
| (isObjectLike(value) && isFunction(value.splice)))) { |
| return !value.length; |
| } |
| return !keys(value).length; |
| } |
| |
| module.exports = isEmpty; |